W25Q40RVSSJM TR

Memory IC Overview

The W25Q40RVSSJM TR is an 8-pin surface-mount NOR flash memory IC from Winbond Electronics, packaged in a tape-and-reel format. It provides 4 Mbit (512K x 8) of non-volatile storage with uniform 4 KB sectors. The device supports SPI and Quad I/O interfaces, operating at clock frequencies up to 133 MHz with a 4.5 ns access time. It functions within a supply voltage range of 2.7V to 3.6V and withstands temperatures from -40°C to 105°C.

Memory IC Feature Summary

• Supports high-speed SPI and Quad I/O communication modes for efficient data transfer.
• Features uniform 4 KB sector architecture for consistent block erasure operations.
• Includes page programming capabilities with a typical write cycle time of 2 ms.

Memory IC Applications

• Firmware storage for embedded microcontroller systems
• Code execution in XIP (Execute-In-Place) applications
• Data logging and configuration storage in industrial controllers

Memory IC Procurement Notes

Verify the specific suffix 'TR' confirms the tape-and-reel packaging variant rather than tube or tray formats. Confirm the manufacturer part number matches exactly, as suffixes often dictate package type or temperature grade. Cross-reference the DigiKey or Mouser catalog numbers to ensure compatibility with automated pick-and-place equipment requirements.

Memory IC Selection Notes

Select this component when a 4 Mbit capacity with uniform sectoring is required for code storage. Ensure the design supports the 2.7V to 3.6V voltage range and operates within the -40°C to 105°C industrial temperature limits. Verify that the host controller supports the necessary SPI clock speeds and Quad I/O commands if maximum throughput is needed.

Memory IC Part Context

This part belongs to the Winbond W25Q series of SpiFlash devices, designed for general-purpose non-volatile memory applications. It shares architectural similarities with other members like the W25Q80 and W25Q16 but offers a specific 4 Mbit density optimized for mid-range firmware storage needs in consumer and industrial electronics.

Memory IC Replacement Considerations

W25Q40RLSSJM is listed as a parameter-equivalent alternative by distributors. Verify pinout compatibility and electrical specifications before substitution. Other W25Q40 variants may differ in package style or temperature rating.